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Monday 8am - 4:30pm Tuesday 8am - 4:30pm Wednesday 8am - 4:30pm Thursday 8am - 4:30pm Friday 8am - 4:30pm

Black Hawk and Bremer County Construction

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Black Hawk and Bremer County Construction

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This page provides information and comments related to projects on Interstate, U.S. and Iowa highways in Black Hawk & Bremer Counties.

The Black Hawk and Bremer County Construction page is a place to get information and provide comments related to construction projects on Interstate, U.S. and Iowa highways in these counties.

11/10/2026

https://iowadot.gov/news/2026-11-03/learn-about-planned-project-iowa-58-greenhill-road-cedar-falls

Find out about a planned project on Iowa 58 at the intersection with Greenhill Road in Cedar Falls.

09/16/2026

🚧 Great news!
We’re moving into the next phase of the U.S. 218 interchange and reconstruction project between Janesville and Waverly, which means a traffic switch is coming.
🔄 Traffic changes this week:
• Thursday: Southbound traffic moves onto the new southbound lanes.
• Friday afternoon: Northbound traffic shifts to a head to head pattern in those same lanes.
➡️ Northbound access for residents along U.S. 218
• If you live south of 260th St., continue on the existing northbound lanes up to 260th St.
• Use the short gravel access to reach 260th St., then the west roundabout to enter U.S. 218 southbound.
• To go northbound, take the Janesville exit and loop through the roundabouts.
⚠️ Safety reminder
You’ll be driving through our workplace, with crews working on both sides of the road. Please slow down, stay alert, and be patient. We want this project finished as much as you do — and we also want everyone to get home safely at the end of the day. ❤️
🏡 East side access for residents along U.S. 218
• All east side sideroads will remain accessible.
• 250th St. will not have direct access from U.S. 218.
• Residents should use 240th St. → Fairview Ave → 250th St.
• 250th St. will have access to U.S. 218 northbound only.
Thanks for your caution and cooperation! 🙏

09/04/2026

🚧 Heads up, I‑380 commuters! 🚧
Starting Sept. 8, a paved shoulder project will mean lane closures over the next few weeks.
Expect slower traffic and possible delays.
➡️ Plan a little extra time for your drive
➡️ Stay alert in the work zone
➡️ Follow posted signs for everyone’s safety
There's more project info in the news release below.

Outside lane closures on I-380 near Brandon begin Sept. 8

07/09/2026

🚧 TRAFFIC PATTERN UPDATE – STARTING MONDAY, JULY 13 🚧
🚗💨 Heads up, drivers! Beginning Monday, July 13, traffic will shift into a head to head pattern in the existing northbound lanes on U.S. 218 between Janesville and Waverly.
📌 Here’s what to expect:
• 🚙➡️ Residents on the east side will have right in/right out access only
• ⛔ 250th Street (west) will be closed permanently
• ⛔ The intersection of Eagle and 250th north will be closed for approximately three weeks
• ✔️ 250th Street (east) will remain open
• 🔓 260th Street will open, allowing access to Eagle and Maple
• ⏱️ Traffic will remain in the northbound lanes for approximately six weeks before shifting into the new southbound lanes
⚠️ Please plan ahead and use caution in the area.
🙏 Thank you for your patience as this work moves forward — all work is weather permitting. The included photos show current progress, including paving on the west roundabout and the southbound on‑ramp.

07/01/2026

An asphalt resurfacing project will mean lane closures on U.S. 218 in Waterloo starting next week. The details on what drivers can expect are in the news release below.

Lane Closures on U.S. 218 in Waterloo Begin July 6

06/09/2026

Sometimes you need a view from above to really appreciate the progress of a project! These drone photos show the new interchange and highway relocation project just north of Janesville.
The first photo looks southeast at the new overpasses and the roundabout at the intersection of the southbound on/off ramps and 260th Street.
The next photo is taken from the opposite side looking north, and the last is from the south end of the project near Janesville, also looking north. In the last picture you can see the new Easton Avenue taking shape on the right side of the images, along with the interchange in the distance.
We’ve included a project diagram for reference as well. The contractor hopes to shift traffic to a head to head pattern in the current northbound lanes by the end of June/early July. They plan to have the new interchange completely open to traffic by mid-December. As always, those dates are weather permitting.

04/30/2026

🚧 Heads up, Waterloo drivers! The U.S. 218 → Iowa 58 ramp closes May 4 to improve a bridge deck. Expect a detour through late July.
👇 Get the details here!

Northbound U.S. 218 Ramp to Southbound Iowa 58 Closes May 4

03/27/2026

🚧 Construction Update 🚧
Work will start back up next week on the reconstruction of U.S. 218 between Janesville and Waverly. That also means lane closures through the area.
📢 All the details can be found in the news release below.
Stay safe and allow a little extra travel time! 🚗

Lane Closures on U.S. 218 Near Waverly Begin on April 2

Address

1420 4th Street SE
Mason City, IA
50401

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm

Telephone

+18008990623

Website

http://www.iowadot.gov/

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